Energy characteristics of Rayleigh waves propagation in unsaturated soils

ZHOU Feng-xi; YAO Tao-qi; LIU Hong-bo

doi:10.16285/j.rsm.2022.0659

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Energy characteristics of Rayleigh waves propagation in unsaturated soils

更新时间：2026-06-25

- Energy characteristics of Rayleigh waves propagation in unsaturated soils
- Vol. 44, Issue S1, Pages: 612-622(2023)
- 作者机构：
  
  1. 兰州理工大学土木工程学院,甘肃,兰州,730050
  2. 兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃,兰州,730050
  3. 东南大学土木工程学院,江苏,南京,211189
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2022.0659
  CLC： TU43
- Online First：21 November 2023，
  
  Published：2023
- 稿件说明：
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ZHOU Feng-xi, YAO Tao-qi, LIU Hong-bo. Energy characteristics of Rayleigh waves propagation in unsaturated soils[J]. 2023, 44(S1): 612-622.
DOI：

ZHOU Feng-xi, YAO Tao-qi, LIU Hong-bo. Energy characteristics of Rayleigh waves propagation in unsaturated soils[J]. 2023, 44(S1): 612-622. DOI： 10.16285/j.rsm.2022.0659.

摘要

基于多孔介质理论以及连续介质力学，通过非饱和土中固相、液相和气相的质量平衡方程、动量平衡方程和非饱和土有效应力原理，建立了非饱和土中平面Rayleigh波的弥散特征方程，利用数值算例分析了饱和度对波速、位移响应及能流分布的影响。结果表明：Rayleigh波主要反映压缩P波和剪切波的特性，其速度、位移及能流分布均受饱和度的影响显著。Rayleigh波的传播速度和衰减呈频散特征，非饱和土体中饱和度的增大将引起位移幅值的显著降低，且随着饱和度的增大，Rayleigh波能量中剪切波分量会有所增加。

Abstract

Based on the theory of porous medium and continuum mechanics

the dispersion equation of Rayleigh waves in unsaturated soils are established using the mass balance equations

the momentum balance equations and the effective stress principle. The influence of the saturation on wave velocity

displacement response and energy flow distribution are studied by numerical examples. The results show that the characteristics of Rayleigh waves mainly reflects the characteristics of compressed P wave and shear wave

and its velocity

displacement and energy distribution are significantly affected by degree of saturation. The propagation velocity and attenuation of Rayleigh wave are dispersive

and the increase of the saturation in the unsaturated soil will cause a significant decrease of the displacement amplitude

as well as the shear wave component in the Rayleigh waves energy will increase with increasing the saturation.

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